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#!/usr/bin/perl -w
#
# Vzic - a program to convert Olson timezone database files into VZTIMEZONE
# files compatible with the iCalendar specification (RFC2445).
#
# Copyright (C) 2001 Ximian, Inc.
# Copyright (C) 2003 Damon Chaplin.
#
# Author: Damon Chaplin <damon@gnome.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
#
# This merges in a new set of VTIMEZONE files with the 'master' set. It only
# updates the files in the master set if the VTIMEZONE component has really
# been changes. Note that the TZID normally includes the date the VTIMEZONE
# file was generated on, so we have to ignore this when comparing the files.
#
# Set these to the toplevel directories of the 2 sets of VTIMEZONE files.
#$MASTER_ZONEINFO_DIR = "/home/damon/cvs/libical/zoneinfo";
$MASTER_ZONEINFO_DIR = "/usr/share/libical-evolution/zoneinfo";
$NEW_ZONEINFO_DIR = "/home/damon/src/vzic-1.0/zoneinfo";
# Set this to 1 if you have version numbers in the TZID like libical.
$LIBICAL_VERSIONING = 1;
# Set this to 0 for dry-runs, and 1 to actually update.
$DO_UPDATES = 1;
# Save this so we can restore it later.
$input_record_separator = $/;
chdir $NEW_ZONEINFO_DIR
|| die "Can't cd to $NEW_ZONEINFO_DIR";
foreach $new_file (`find -name "*.ics"`) {
# Get rid of './' at start and whitespace at end.
$new_file =~ s/^\.\///;
$new_file =~ s/\s+$//;
# print "File: $new_file\n";
open (NEWZONEFILE, "$new_file")
|| die "Can't open file: $NEW_ZONEINFO_DIR/$new_file";
undef $/;
$new_contents = <NEWZONEFILE>;
$/ = $input_record_separator;
close (NEWZONEFILE);
$master_file = $MASTER_ZONEINFO_DIR . "/$new_file";
# print "Master File: $master_file\n";
$copy_to_master = 0;
# If the ics file exists in the master copy we have to compare them,
# otherwise we can just copy the new file into the master directory.
if (-e $master_file) {
open (MASTERZONEFILE, "$master_file")
|| die "Can't open file: $master_file";
undef $/;
$master_contents = <MASTERZONEFILE>;
$/ = $input_record_separator;
close (MASTERZONEFILE);
$new_contents_copy = $new_contents;
# Strip the TZID from both contents.
$new_contents_copy =~ s/^TZID:\S+$//m;
$new_tzid = $&;
$master_contents =~ s/^TZID:\S+$//m;
$master_tzid = $&;
# print "Matched: $master_tzid\n";
if ($new_contents_copy ne $master_contents) {
print "$new_file has changed. Updating...\n";
$copy_to_master = 1;
if ($LIBICAL_VERSIONING) {
# We bump the version number in the new file.
$master_tzid =~ m%_(\d+)/%;
$version_num = $1;
# print "Version: $version_num\n";
$version_num++;
$new_tzid =~ s%_(\d+)/%_$version_num/%;
# print "New TZID: $new_tzid\n";
$new_contents =~ s/^TZID:\S+$/$new_tzid/m;
}
}
} else {
print "$new_file doesn't exist in master directory. Copying...\n";
$copy_to_master = 1;
}
if ($copy_to_master) {
# print "Updating: $new_file\n";
if ($DO_UPDATES) {
open (MASTERZONEFILE, ">$master_file")
|| die "Can't create file: $master_file";
print MASTERZONEFILE $new_contents;
close (MASTERZONEFILE);
}
}
}
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